SDSS J212738.08+101822.7

All names: SDSS J212738.08+101822.7, GALEX J212738.0+101823, Gaia DR2 1742299663112504576, Gaia EDR3 1742299663112504576, [SGR2010] J2127+1018, Gaia DR3 1742299663112504576, WD 2125+100

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD HE Gaia DR2 Stilism sdss-wdms.org (29/04/2016) Simbad White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 21 27 38.08 (0.3) 21 27 38.08 21 27 38.08 (0.4) 21 27 38.08 21 27 38.08 (0.3) 21 27 37.32 21 27 38.08
Declination 10 18 22.49 (0.3) 10 18 22.70 10 18 22.50 (0.4) 10 18 22.72 10 18 22.72 (0.3) 10 18 17.64 10 18 22.70
Spectral type DB+M DB+M DB+M DB2.7 M DB+M DB+MS
Effective temperature [K] 8894.0 18394.0 (40) 18143.0 (268)
log(g) [cgs] 7.24 8.21 (0.02) 8.18 (0.09)
Mass [M☉] 0.251
log(Luminosity) [L☉]
Cooling age [Gyr] 0.4223
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 1.94 (0.4) 2.48 (0.5) 1.94 (0.4)
Distance [pc] 514.38 (103) 403.00 (82) 514.38 (103)
Composition He
Proper motion (right ascension) [mas/yr] 1.060262507 (0.4) -0.824471047 (0.9) 1.06 (0.4)
Proper motion (declination) [mas/yr] -14.30681623 (0.3) -14.70018895 (0.8) -14.307 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS WDMS WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.43 (0.03) 19.41 19.43 (0.03) 19.41 19.42 (0.04)
g magnitude 19.52 (0.01) 19.53 19.52 (0.01) 19.52 19.54 (0.02)
r magnitude 19.88 (0.02) 19.85 19.88 (0.02) 19.84 19.86 (0.02)
i magnitude 20.02 (0.03) 19.92 20.02 (0.03) 19.91 19.92 (0.03)
z magnitude 19.62 (0.08) 19.65 19.62 (0.08) 19.64 19.64 (0.08)
G magnitude 19.62 (0.04) 19.68 19.62 (0.005)
BP magnitude 19.55 (0.04) 19.53
RP magnitude 19.46 (0.06) 19.43
Pan g magnitude 19.56 (0.01)
Pan r magnitude 19.84 (0.01)
Pan i magnitude 19.95 (0.01)
Pan z magnitude 19.83 (0.02)
Pan y magnitude 19.60 (0.03)
E(B-V) 0.041

* Constant surface field

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The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.